Process for the continuous mechanical manufacture of objects from plastic substances.



0. BBBRHARD. PROCESS FOR THE CONTINUOUS MECHANICAL MANUFACTURE OF OBJECTS FROM PLASTIC SUBSTANCES.

APPLICATION FILED JAN. so, 1913.

1,083,275. Patented Jan. 6, 1914.

J76: WW5.

UNI D STATES Pg'rENT OFFICE.

OTTO EBEBHARD, OF HEIDENAU, NEAR DRESDEN, GERMANY.

PROCESS FOR THE CONTINUOUS MECHANICAL MANUFACTURE OF OBJECTS FROM PLASTIC SUBSTANCES.

Specification of Letters Patent.

Patented J an. 6, 1914.

Application filed January 30, 1918, Serial No. 745,177.

1'0 QM whom it may concern Be it known that I, Dr. O'r'ro EBERHARD,

a subject of the German Emperor, residing at 7 Ber strassc Heidenau near Dresden in facture of objects from plastic substances a with a uniform or permanent pattern,-

changeable as desired, such substances being advantageouslyof an organic nature such as artificial horn and the like, the manufacture being affected by pressure device's. It is already known in the manufacture of patterned objects such as soaps, sweets, to'causediversely. colored streams manufactured by separate presses to pass through a mandrel or die and to unite them to a single cord under constant pressure. The present invention differs therefrom essentially in the fact that the diversely colored separate streams coming from the separate presses, are led to gether to a chamber provided with mixing or deviating devices and leave the latter as a patterned combined stream. These inserted elements obstruct the smooth passage of the streams so that corresponding. changes in position and consequently modification of the pattern are effected. The same arrangement of the elements will naturally always give the same pattern. In order to attain a greater variety the inserted elements can be constantly actuated by a device. This again enables the-same pattern always to be obtained or to be repeated by causing a certain inserted element to rotate at a certain num-. ber of revolutions.

The apparatus serving for carrying out the novel method into practice consists of a suitable number of stream presses opening into a chamber provided with stationary or movable mixing or deviating devices and comprising outlets for the patterned combined stream.

In the accompanying drawing several embodiments of the apparatus are illustrated.

Figure 1 shows a triple press in horizontal section.

Fig. 2. 6 and 7 show two different constructionals' ofa perforated disk located at the outlet end of the mixing chamber.

In the construction of Fig. 1, there are I three separate presses which are provided in the usual manner with conveying worms and open into the common mixing chamber 4. The latter is provided with a mixing 5 element such as a slowly rotating worm 5 driven by the pulley 6. The worm 5 does not serve to convey the substances like the worms in the presses 1 to 3 because this is already effected by the pressure exerted on the separate streams of the presses 1, 2 and 3 which unite in the mixing chamber 4. The worm 5 of the latter chamber rather serves to produce a certain kind of spiral pattern as each rib of the worm effects on passing before the inlets a certain division. Thus the-various streams are continuously divided by the worm 5 in difl'crent ways. The slowly rotating worm 5 can therefore be replaced by other mixing elements. In Fig. 2, across? instead of the mixing worm, is inserted in the mixing chamber 4 and in this case, streams only from two separate presses 1, 2 unite. The cross 7 can also be slowly rotated and acts in a manner different to that of the worm 5 of Fig. 1, on the combined stream leaving the mixing chamber. A row of such crosses or star-like structures can be arranged in series inthe mixing chamber as shown in Fig. 4. In the latter case there are three crosses 8, relatively staggered and mounted in series on the same shaftin the mixing chamber 4.

As said before, the inserted elements may instead of being rotatable, be stationary or movable in a different manner. In Fig. 5 there are stationary inserted elements 9 arranged within the mixing chamber 4 and consisting of'rods or other projections. The outlets of two presses 1, 2 open into the mixing chamber, one of them being provided with three spouts 10.

It is evident that the mixing elements can be of any shape provided that they produce a deviation of the separate colored substances lying bcside one another, whereby a certain pattern is obtained. The pattern of the combined stream leaving the mixing Figs. 2, 4 and 5 show three dif-@ ferent constructions of a mixing chamber of; providing perforated disks 11 at the outlet chamber 4 can be still further influenced by a double press, in horizontal section. Fig. 3 end of the chamber, two constructions there- 86 in an end view of the inserted element of of being shown 1n F1gs.6 and 7. The perfo- 110 rations of these disks mixing cham er, combinin 11 may also be different.

I claim:

1. A process of manufacturing articles from plastic substances consisting in supplying separate. plastic cords of different color from a lurality of press devices to a said cords under constant pressure and diverting them in their direction one to each other within the mixing chamber from which they issue as a patterned combined cord.

2. A process of manufacturing articles from plastic substances consistin in supplying separate plastic cords of di erent color from a plurality of press devices to a mixing chamber containing inserted elements combining said cords under constant pressure and diverting them in a regular manner from'plastic substances consisting in lead-- ing seiparate plastic cords of different color manu actured by separate -presses into a mixing chamber, uniting the cords therein under constant pressure and mixing said cords by movable elements inserted in said mixing chamber from which they issue as a patterned combined cord.

In testimonywhereof I afiix my signature in presence of two witnesses.

, DR. OTTO EBERHARD. Witnesses:

' EMIL PIERRETTE,

PAUL GREINER. 

